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Laboratory investigation of enclosed cab filtration system performance factors.

Authors
Organiscak-JA; Cecala-AB
Source
Min Eng 2009 Jan; 61(1):48-54
NIOSHTIC No.
20034930
Abstract
Enclosed cabs are a primary means of reducing the silica dust exposure of equipment operators at surface mines. The National Institute for Occupational Safety and Health (NIOSH) has investigated various factor effects on enclosed cab air filtration system performance. Factors experimentally investigated were intake filter efficiency, intake air leakage, intake filter loading (filter flow resistance), recirculation filter use and wind velocity effects on cab penetration (inside to outside cab concentration ratio). Adding an intake pressurizer fan to the filtration system was also investigated. Results indicate that the intake filter efficiency and recirculation filter were the two most influential factors on cab penetration. Use of a recirculation filter significantly reduced cab penetration over the intake air filter by itself due to the multiplicable filtration of the cab interior air. Cab penetration was also affected to a lesser extent by intake filter loading and air leakage. Adding an intake pressurizer fan notably increased intake airflow and cab pressure while providing only minor changes to cab penetration.
Keywords
Mining-industry; Ventilation; Filters; Air-filters; Air-flow; Air-quality-control; Mining-equipment
CODEN
MIENAB
Publication Date
20090101
Document Type
Journal Article
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Issue of Publication
1
ISSN
0026-5187
NIOSH Division
PRL
Priority Area
Mining
Source Name
Mining Engineering
State
PA
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